PREPARATION OF ACTIVATED CARBON FROM TEA WASTE AND ITS APPLICATIONS FOR ADSORPTION OF BENTAZON FROM AQUEOUS SOLUTION

  • Đặng Văn Thành
  • Đỗ Trà Hương

Abstract

    Activated carbon was prepared from tea waste by H2SO4 activation (TAC), and was applied toremove bentazon from aqueous solution. The TAC was characterized by Raman Spectrometer,X-ray diffractometer (XRD), and scanning electron microscope (SEM). The influence of pH(1,5 - 11), contact time (30 - 300 min), and the amount of adsorbent (0,01 - 0,05 g) onbentazon efficiency by the TAC were also investigated. The results show that the time to reachadsorption equilibrium and the optimal pH value for adsorption of bentazon are 180 min and3.0; 0,05g, respectively. The maximum monolayer adsorption capacity of TAC is 117,647mg/g. The as-prepared TAC therefore acts as a promising adsorbent for the pesticide removalfrom the polluted water.

Keywords: Adsorption; tea waste; Langmuir isotherrm; pesticides; bentazon.

Published
2016-01-08
Section
ARTICLES